The Hobbit: The Battle of the Five Armies

Dragon Smaug tells Hobbit Bilbo, referring to Dwarf Thorin, “Watch it corrupt his heart and drive him mad.” (0:22)

Dwarf Balin tells Bilbo, referring to Thorin, “It sent his grandfather mad.”
Referring to the Arkenstone, “Would it stay his madness?” (0:36)

Elf Lord Thranduil, referring to Thorin and Dáin, “He’s clearly mad, like his cousin.” (1:09)

Wizard Gandalf: “This is madness!” (1:11)

Thorin recalls the voice of Balin: “A sickness which drove your grandfather mad.”
He hallucinates. (1:22)

Bilbo grieves the death of Thorin as does Elf Tauriel that of Dwarf Kili. (1:57)

The Hobbit:

• An Unexpected Journey
• The Desolation of Smaug
• The Battle of the Five Armies